Cylindrical battery

Abstract

The board assembly portion includes a circuit board, a communication terminal, and an insulating formed section. A data-processing circuit is mounted on the circuit board. The insulating formed section positions the communication terminal in a predetermined position. A penetrating opening is formed in the central part of the board assembly portion to receive the protruding terminal of the base battery portion. The communication terminal that is formed in a ring shape is secured around the periphery of the penetrating opening on the upper surface side of the board assembly portion. The protruding terminal of the base battery portion has a height that protrudes from the upper surface of the board assembly portion. In the state where the board assembly portion is secured to the base battery portion, the whole cylindrical battery has the same exterior size as a standard size battery.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a cylindrical battery that has the same exterior shape as a standard size battery, and in particular a cylindrical battery that includes a data-processing circuit. Also, the present invention relates to a cylindrical battery that has a small exterior battery shape but includes a circuit board.[0003]2. Description of the Related Art[0004]Battery packs have been developed that include an electronic circuit (see Japanese Patent Laid-Open Publication H9-63552, Domestic Announcement 2003-516604, and Japanese Patent Laid-Open Publication 2004-265722).[0005]The battery packs provides various types of functions by means of the electronic circuit, and can be conveniently used. In the battery pack disclosed in Japanese Patent Laid-Open Publication H9-63552, the electronic circuit is used as a protection circuit that protects a battery in charging / discharging operation. The battery pack controls ch...

AI Technical Summary

Benefits of technology

[0010]The present invention has been developed for solving the disadvantages. It is an important object of the present invention to provide a cylindrical battery that can be used as a substitute for a standard size battery. It is another important object of the present invention to provide a cylindrical battery that has a simple arrangement but can be arranged so that the positive terminal of the cylindrical battery is exactly positioned at a predetermined position without positioning deviation, and a circuit board is positioned at a predetermined position by the positive terminal of the cylindrical battery.

[0030]Also, in the cylindrical battery according to the present invention, in the case where a data-processing circuit that is provided on the circuit board to calculate a battery remaining capacity is operated by electric power that is supplied from the base battery portion, and the data-processing circuit calculates the battery remaining capacity of the base battery portion that is used as a power supply that operates the data-processing circuit, the cylindrical battery has features in that the structure of the cylindrical battery can be simple but the remaining capacity of the battery can be displayed.

Problems solved by technology

Accordingly, in the case where the circuit board is mounted to the battery pack, this battery pack cannot be used as a substitute for an AA size battery.

In the case of an electric device that has the specially-designed battery holder, if this battery pack cannot be used, commercial AA size batteries cannot be used as a substitute for this battery pack.

In addition to this, the structure of the battery pack is complicated as a whole, and as a result the manufacturing cost of the battery pack will be high.

Also, in the case of the battery device, since a standard size battery such as an AA size battery is used in combination with the electronic circuit housing that is coupled to the standard size battery, the structure of the battery device is complicated as a whole.

In addition to this, it is difficult that the electronic circuit housing is stably secured to the battery device.

Also, time and effort are required to stably and exactly secure the positive terminal in place.

It is because the positioning deviation of the positive terminal causes poor contact when the battery device is mounted to an electric device.

If the structure of the housing is complicated, and high processing accuracy is required, the manufacturing cost of the housing that includes the electronic circuit becomes high.

As a result, it is difficult to inexpensively mass-produce the housing.

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